java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:58:59,861 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:58:59,863 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:58:59,878 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:58:59,879 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:58:59,880 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:58:59,881 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:58:59,883 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:58:59,884 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:58:59,885 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:58:59,886 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:58:59,886 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:58:59,887 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:58:59,888 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:58:59,889 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:58:59,890 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:58:59,891 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:58:59,893 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:58:59,895 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:58:59,901 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:58:59,903 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:58:59,904 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:58:59,906 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:58:59,906 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:58:59,907 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:58:59,907 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:58:59,908 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:58:59,909 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:58:59,910 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:58:59,911 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:58:59,911 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:58:59,912 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:58:59,912 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:58:59,912 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:58:59,913 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:58:59,914 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:58:59,914 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:58:59,942 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:58:59,943 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:58:59,943 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:58:59,945 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:58:59,945 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:58:59,945 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:58:59,946 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:58:59,946 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:58:59,946 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:58:59,946 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:58:59,946 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:58:59,947 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:58:59,948 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:58:59,948 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:58:59,948 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:58:59,948 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:58:59,948 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:58:59,949 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:58:59,949 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:58:59,949 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:58:59,949 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:58:59,949 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:58:59,950 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:58:59,951 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:58:59,952 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:58:59,952 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:58:59,952 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:58:59,952 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:58:59,953 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:58:59,953 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:58:59,953 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:58:59,953 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:58:59,954 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:58:59,954 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:59:00,009 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:59:00,028 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:59:00,032 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:59:00,034 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:59:00,034 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:59:00,035 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label27_true-unreach-call.c [2018-10-27 14:59:00,103 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2f91f3eeb/6f46fc0810404871b1ea58af3bb6d299/FLAG44d5f189a [2018-10-27 14:59:00,763 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:59:00,764 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label27_true-unreach-call.c [2018-10-27 14:59:00,786 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2f91f3eeb/6f46fc0810404871b1ea58af3bb6d299/FLAG44d5f189a [2018-10-27 14:59:00,808 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2f91f3eeb/6f46fc0810404871b1ea58af3bb6d299 [2018-10-27 14:59:00,820 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:59:00,822 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:59:00,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:59:00,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:59:00,830 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:59:00,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:59:00" (1/1) ... [2018-10-27 14:59:00,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a445e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:00, skipping insertion in model container [2018-10-27 14:59:00,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:59:00" (1/1) ... [2018-10-27 14:59:00,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:59:00,963 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:59:02,034 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:59:02,039 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:59:02,439 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:59:02,462 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:59:02,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:02 WrapperNode [2018-10-27 14:59:02,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:59:02,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:59:02,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:59:02,465 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:59:02,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:02" (1/1) ... [2018-10-27 14:59:02,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:02" (1/1) ... [2018-10-27 14:59:02,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:59:02,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:59:02,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:59:02,948 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:59:02,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:02" (1/1) ... [2018-10-27 14:59:02,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:02" (1/1) ... [2018-10-27 14:59:03,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:02" (1/1) ... [2018-10-27 14:59:03,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:02" (1/1) ... [2018-10-27 14:59:03,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:02" (1/1) ... [2018-10-27 14:59:03,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:02" (1/1) ... [2018-10-27 14:59:03,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:02" (1/1) ... [2018-10-27 14:59:03,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:59:03,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:59:03,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:59:03,237 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:59:03,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:59:03,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:59:03,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:59:03,307 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:59:03,307 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:59:03,307 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:59:03,307 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:59:03,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:59:03,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:59:03,308 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:59:03,308 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:59:18,058 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:59:18,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:59:18 BoogieIcfgContainer [2018-10-27 14:59:18,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:59:18,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:59:18,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:59:18,065 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:59:18,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:59:00" (1/3) ... [2018-10-27 14:59:18,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fea2d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:59:18, skipping insertion in model container [2018-10-27 14:59:18,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:02" (2/3) ... [2018-10-27 14:59:18,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fea2d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:59:18, skipping insertion in model container [2018-10-27 14:59:18,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:59:18" (3/3) ... [2018-10-27 14:59:18,069 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label27_true-unreach-call.c [2018-10-27 14:59:18,079 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:59:18,087 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:59:18,105 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:59:18,147 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:59:18,148 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:59:18,148 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:59:18,148 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:59:18,148 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:59:18,148 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:59:18,148 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:59:18,149 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:59:18,183 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 14:59:18,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-27 14:59:18,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:59:18,194 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:59:18,196 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:59:18,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:59:18,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1584552652, now seen corresponding path program 1 times [2018-10-27 14:59:18,206 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:59:18,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:59:18,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:59:18,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:59:18,259 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:59:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:59:18,752 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-27 14:59:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:59:18,765 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:59:18,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:59:18,766 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:59:18,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:59:18,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:59:18,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:59:18,792 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 14:59:29,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:59:29,050 INFO L93 Difference]: Finished difference Result 2133 states and 3959 transitions. [2018-10-27 14:59:29,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:59:29,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-10-27 14:59:29,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:59:29,084 INFO L225 Difference]: With dead ends: 2133 [2018-10-27 14:59:29,084 INFO L226 Difference]: Without dead ends: 1523 [2018-10-27 14:59:29,094 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:59:29,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2018-10-27 14:59:29,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1516. [2018-10-27 14:59:29,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2018-10-27 14:59:29,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2287 transitions. [2018-10-27 14:59:29,275 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2287 transitions. Word has length 48 [2018-10-27 14:59:29,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:59:29,276 INFO L481 AbstractCegarLoop]: Abstraction has 1516 states and 2287 transitions. [2018-10-27 14:59:29,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:59:29,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2287 transitions. [2018-10-27 14:59:29,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-27 14:59:29,288 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:59:29,289 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:59:29,291 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:59:29,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:59:29,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1770043202, now seen corresponding path program 1 times [2018-10-27 14:59:29,291 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:59:29,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:59:29,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:59:29,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:59:29,293 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:59:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:59:29,781 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-27 14:59:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:59:29,829 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:59:29,829 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:59:29,830 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 124 with the following transitions: [2018-10-27 14:59:29,832 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [994], [996], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 14:59:29,891 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:59:29,891 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:59:30,334 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 14:59:33,217 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 14:59:33,219 INFO L272 AbstractInterpreter]: Visited 83 different actions 467 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 14:59:33,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:59:33,259 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 14:59:33,259 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:59:33,260 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 14:59:33,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:59:33,274 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 14:59:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:59:33,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 14:59:37,786 WARN L179 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 42 [2018-10-27 14:59:38,532 WARN L179 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 21 [2018-10-27 14:59:38,827 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:59:38,828 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 14:59:41,582 WARN L179 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 39 DAG size of output: 13 [2018-10-27 14:59:42,113 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-10-27 14:59:42,420 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:59:42,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 14:59:42,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-27 14:59:42,457 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:59:42,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:59:42,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:59:42,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-10-27 14:59:42,459 INFO L87 Difference]: Start difference. First operand 1516 states and 2287 transitions. Second operand 6 states. [2018-10-27 15:00:07,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:00:07,722 INFO L93 Difference]: Finished difference Result 4868 states and 7634 transitions. [2018-10-27 15:00:07,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 15:00:07,726 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-10-27 15:00:07,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:00:07,750 INFO L225 Difference]: With dead ends: 4868 [2018-10-27 15:00:07,751 INFO L226 Difference]: Without dead ends: 3358 [2018-10-27 15:00:07,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-10-27 15:00:07,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2018-10-27 15:00:07,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 3350. [2018-10-27 15:00:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3350 states. [2018-10-27 15:00:07,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 5024 transitions. [2018-10-27 15:00:07,864 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 5024 transitions. Word has length 123 [2018-10-27 15:00:07,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:00:07,866 INFO L481 AbstractCegarLoop]: Abstraction has 3350 states and 5024 transitions. [2018-10-27 15:00:07,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:00:07,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 5024 transitions. [2018-10-27 15:00:07,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-27 15:00:07,875 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:00:07,875 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:00:07,876 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:00:07,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:00:07,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1103220262, now seen corresponding path program 1 times [2018-10-27 15:00:07,876 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:00:07,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:00:07,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:00:07,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:00:07,878 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:00:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:00:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 35 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:00:08,249 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:00:08,249 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:00:08,250 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 137 with the following transitions: [2018-10-27 15:00:08,250 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [994], [996], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 15:00:08,255 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:00:08,255 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:00:08,396 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:00:09,024 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 15:00:09,024 INFO L272 AbstractInterpreter]: Visited 96 different actions 274 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 15:00:09,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:00:09,064 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 15:00:09,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:00:09,064 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:00:09,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:00:09,081 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 15:00:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:00:09,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:00:09,329 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:00:09,329 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:00:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:00:09,661 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 15:00:09,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-27 15:00:09,662 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:00:09,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 15:00:09,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 15:00:09,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 15:00:09,663 INFO L87 Difference]: Start difference. First operand 3350 states and 5024 transitions. Second operand 3 states. [2018-10-27 15:00:15,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:00:15,879 INFO L93 Difference]: Finished difference Result 9737 states and 14929 transitions. [2018-10-27 15:00:15,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 15:00:15,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 136 [2018-10-27 15:00:15,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:00:15,927 INFO L225 Difference]: With dead ends: 9737 [2018-10-27 15:00:15,927 INFO L226 Difference]: Without dead ends: 6393 [2018-10-27 15:00:15,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 271 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 15:00:15,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6393 states. [2018-10-27 15:00:16,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6393 to 6392. [2018-10-27 15:00:16,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6392 states. [2018-10-27 15:00:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6392 states to 6392 states and 9565 transitions. [2018-10-27 15:00:16,138 INFO L78 Accepts]: Start accepts. Automaton has 6392 states and 9565 transitions. Word has length 136 [2018-10-27 15:00:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:00:16,139 INFO L481 AbstractCegarLoop]: Abstraction has 6392 states and 9565 transitions. [2018-10-27 15:00:16,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 15:00:16,139 INFO L276 IsEmpty]: Start isEmpty. Operand 6392 states and 9565 transitions. [2018-10-27 15:00:16,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-27 15:00:16,141 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:00:16,142 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:00:16,142 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:00:16,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:00:16,142 INFO L82 PathProgramCache]: Analyzing trace with hash -433411345, now seen corresponding path program 1 times [2018-10-27 15:00:16,143 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:00:16,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:00:16,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:00:16,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:00:16,144 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:00:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:00:16,395 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:00:16,396 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:00:16,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:00:16,396 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:00:16,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:00:16,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:00:16,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:00:16,397 INFO L87 Difference]: Start difference. First operand 6392 states and 9565 transitions. Second operand 6 states. [2018-10-27 15:00:22,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:00:22,416 INFO L93 Difference]: Finished difference Result 15576 states and 24002 transitions. [2018-10-27 15:00:22,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:00:22,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-27 15:00:22,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:00:22,466 INFO L225 Difference]: With dead ends: 15576 [2018-10-27 15:00:22,467 INFO L226 Difference]: Without dead ends: 9190 [2018-10-27 15:00:22,489 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:00:22,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9190 states. [2018-10-27 15:00:22,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9190 to 9136. [2018-10-27 15:00:22,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9136 states. [2018-10-27 15:00:22,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9136 states to 9136 states and 12675 transitions. [2018-10-27 15:00:22,737 INFO L78 Accepts]: Start accepts. Automaton has 9136 states and 12675 transitions. Word has length 145 [2018-10-27 15:00:22,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:00:22,738 INFO L481 AbstractCegarLoop]: Abstraction has 9136 states and 12675 transitions. [2018-10-27 15:00:22,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:00:22,738 INFO L276 IsEmpty]: Start isEmpty. Operand 9136 states and 12675 transitions. [2018-10-27 15:00:22,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-27 15:00:22,744 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:00:22,744 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:00:22,745 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:00:22,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:00:22,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1138873311, now seen corresponding path program 1 times [2018-10-27 15:00:22,745 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:00:22,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:00:22,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:00:22,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:00:22,747 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:00:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:00:23,154 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:00:23,155 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:00:23,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 15:00:23,155 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:00:23,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 15:00:23,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 15:00:23,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 15:00:23,156 INFO L87 Difference]: Start difference. First operand 9136 states and 12675 transitions. Second operand 5 states. [2018-10-27 15:00:44,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:00:44,345 INFO L93 Difference]: Finished difference Result 27823 states and 39695 transitions. [2018-10-27 15:00:44,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 15:00:44,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2018-10-27 15:00:44,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:00:44,419 INFO L225 Difference]: With dead ends: 27823 [2018-10-27 15:00:44,419 INFO L226 Difference]: Without dead ends: 18693 [2018-10-27 15:00:44,456 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 15:00:44,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18693 states. [2018-10-27 15:00:44,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18693 to 18609. [2018-10-27 15:00:44,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18609 states. [2018-10-27 15:00:44,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18609 states to 18609 states and 24751 transitions. [2018-10-27 15:00:44,874 INFO L78 Accepts]: Start accepts. Automaton has 18609 states and 24751 transitions. Word has length 186 [2018-10-27 15:00:44,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:00:44,874 INFO L481 AbstractCegarLoop]: Abstraction has 18609 states and 24751 transitions. [2018-10-27 15:00:44,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 15:00:44,875 INFO L276 IsEmpty]: Start isEmpty. Operand 18609 states and 24751 transitions. [2018-10-27 15:00:44,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-27 15:00:44,880 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:00:44,881 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:00:44,881 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:00:44,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:00:44,881 INFO L82 PathProgramCache]: Analyzing trace with hash -509447490, now seen corresponding path program 1 times [2018-10-27 15:00:44,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:00:44,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:00:44,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:00:44,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:00:44,883 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:00:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:00:45,211 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:00:45,627 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:00:45,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:00:45,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:00:45,628 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:00:45,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:00:45,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:00:45,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:00:45,629 INFO L87 Difference]: Start difference. First operand 18609 states and 24751 transitions. Second operand 6 states. [2018-10-27 15:00:51,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:00:51,596 INFO L93 Difference]: Finished difference Result 37264 states and 49800 transitions. [2018-10-27 15:00:51,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:00:51,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 234 [2018-10-27 15:00:51,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:00:51,669 INFO L225 Difference]: With dead ends: 37264 [2018-10-27 15:00:51,669 INFO L226 Difference]: Without dead ends: 18661 [2018-10-27 15:00:51,711 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:00:51,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18661 states. [2018-10-27 15:00:51,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18661 to 18192. [2018-10-27 15:00:51,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18192 states. [2018-10-27 15:00:52,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18192 states to 18192 states and 21379 transitions. [2018-10-27 15:00:52,043 INFO L78 Accepts]: Start accepts. Automaton has 18192 states and 21379 transitions. Word has length 234 [2018-10-27 15:00:52,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:00:52,044 INFO L481 AbstractCegarLoop]: Abstraction has 18192 states and 21379 transitions. [2018-10-27 15:00:52,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:00:52,044 INFO L276 IsEmpty]: Start isEmpty. Operand 18192 states and 21379 transitions. [2018-10-27 15:00:52,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-10-27 15:00:52,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:00:52,054 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:00:52,054 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:00:52,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:00:52,055 INFO L82 PathProgramCache]: Analyzing trace with hash -2067842516, now seen corresponding path program 1 times [2018-10-27 15:00:52,055 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:00:52,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:00:52,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:00:52,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:00:52,057 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:00:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:00:52,667 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-27 15:00:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 83 proven. 85 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-27 15:00:53,304 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:00:53,304 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:00:53,304 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-10-27 15:00:53,305 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [994], [996], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1474], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 15:00:53,311 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:00:53,311 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:00:53,574 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:00:55,320 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 15:00:55,321 INFO L272 AbstractInterpreter]: Visited 138 different actions 400 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 15:00:55,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:00:55,358 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 15:00:55,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:00:55,359 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:00:55,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:00:55,372 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 15:00:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:00:55,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:00:56,184 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-10-27 15:00:56,390 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-27 15:00:56,390 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:00:57,300 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 87 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:00:57,321 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:00:57,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 19 [2018-10-27 15:00:57,321 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:00:57,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-27 15:00:57,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-27 15:00:57,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2018-10-27 15:00:57,323 INFO L87 Difference]: Start difference. First operand 18192 states and 21379 transitions. Second operand 14 states. [2018-10-27 15:01:32,782 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 25 [2018-10-27 15:02:14,072 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-27 15:02:45,452 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2018-10-27 15:02:50,416 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-10-27 15:02:55,534 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 Received shutdown request... [2018-10-27 15:03:07,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-10-27 15:03:07,638 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 15:03:07,643 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 15:03:07,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:03:07 BoogieIcfgContainer [2018-10-27 15:03:07,644 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 15:03:07,645 INFO L168 Benchmark]: Toolchain (without parser) took 246824.09 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 540.9 MB. Max. memory is 7.1 GB. [2018-10-27 15:03:07,646 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 15:03:07,646 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1640.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-27 15:03:07,647 INFO L168 Benchmark]: Boogie Procedure Inliner took 482.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -942.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-27 15:03:07,648 INFO L168 Benchmark]: Boogie Preprocessor took 289.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 42.7 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. [2018-10-27 15:03:07,649 INFO L168 Benchmark]: RCFGBuilder took 14823.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 453.9 MB). Peak memory consumption was 453.9 MB. Max. memory is 7.1 GB. [2018-10-27 15:03:07,649 INFO L168 Benchmark]: TraceAbstraction took 229582.53 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-27 15:03:07,654 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1640.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 482.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -942.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 289.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 42.7 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14823.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 453.9 MB). Peak memory consumption was 453.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229582.53 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 131). Cancelled while BasicCegarLoop was constructing difference of abstraction (18192states) and FLOYD_HOARE automaton (currently 182 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (117916 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 229.5s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 205.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2765 SDtfs, 26865 SDslu, 4622 SDs, 0 SdLazy, 70158 SolverSat, 11919 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 179.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1283 GetRequests, 1045 SyntacticMatches, 9 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14500 ImplicationChecksByTransitivity, 18.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18609occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.2s AbstIntTime, 3 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 623 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 14.6s InterpolantComputationTime, 1661 NumberOfCodeBlocks, 1661 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2172 ConstructedInterpolants, 220 QuantifiedInterpolants, 2969167 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1025 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 625/879 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown